Boston 2024’s new, more detailed Olympic bid proposal reveals that taxpayers would need to help pay for transportation improvements needed to hold the games in the city. Projected costs include about $350 million to improve the Green Line so it can handle more three-car trains; an additional $105 million to move passengers more quickly through the Red Line; and another $100 million to improve the Broadway T Station.

The independent audit also reports that the MBTA’s commuter rail service is expected to lose even more money this year, the Globe reports. A company spokeswoman says Keolis has faced several challenges, including “poor maintenance” of trains from its predecessor.

The T’s largest employees union has vowed to sue the state, or petition the federal government to cut off millions of dollars in transit aid, if a key provision of Baker’s overhaul is approved by lawmakers.

House Speaker Robert DeLeo delivered a major win for Gov. Charlie Baker on Wednesday afternoon, committing himself to the creation of a management control board to oversee the MBTA in the face of opposition from Senate leaders.

“What I and the governor do not expect you to be is a fiscal and management control board for the MBTA,” Transportation Secretary Stephanie Pollack told the reconstituted state transportation board Wednesday.

The Senate’s plan does not call for a temporary fiscal control board, a major part of the governor’s proposal. It also doesn’t suspend a union wage law that critics say drives up prices for contracting work for the MBTA.

There’s pushback on Beacon Hill to Gov. Charlie Baker’s plans to fix the troubled MBTA. The opposition speaks to a larger skepticism about the governor’s proposed T fix that was on full display at a five-hour hearing on Beacon Hill Monday.

The governor testified Monday before the Legislature’s Transportation Committee, which is considering a bill that Baker filed after a task force report pointed to a “pervasive organizational failure” at the MBTA.